Quick testing device for load efficiency of gear shifting flexible shaft for vehicle

Abstract

The utility model relates to the technical field of automobile machinery detection equipment, and particularly discloses a vehicle gear shifting flexible shaft load efficiency rapid test device comprising a semicircular support frame and a support frame, two adjusting rods are connected between the semicircular support frame and the support frame, and a semicircular limiting track is installed on the semicircular support frame. A flexible shaft protection pipe outside the flexible shaft penetrates through the semicircular limiting rail; a force application mechanism is installed on one side of the upper portion of the supporting frame and provided with a lead screw and a first torque meter, the first torque meter moves through the lead screw and is connected with one end of a flexible shaft, a stress mechanism is installed on the other side of the upper portion of the supporting frame and provided with a second torque meter, and the second torque meter is connected with the other end of the flexible shaft. According to the utility model, the gear shifting flexible shaft load efficiency is rapidly detected, and the efficiency is greatly improved compared with professional test equipment; the real vehicle use condition of the flexible shaft is simulated to the maximum extent to test the gear shifting flexible shaft load efficiency, and an important technical data basis is provided for accurate analysis and improvement of problems.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile mechanical testing equipment, in particular to a vehicle shifting flexible shaft load efficiency rapid testing device. Background Art

[0002] Flexible shaft gear shifting control is applicable to various fields of the machinery industry, and is mostly used in vehicle gear selection and shifting operating systems between various components such as automobiles. The load efficiency performance index of the flexible shaft largely determines the maneuverability, stability and comfort of the vehicle gear shifting, and the performance of the flexible shaft is mainly determined by the performance parameters such as the load efficiency, stroke efficiency, working stroke and durability of the flexible shaft.

[0003] In order to ensure that the gear shifting performance of the whole vehicle meets the requirements of the vehicle's controllability technical indicators, the vehicle manufacturer needs to test the size, efficiency, travel and other performance of the flexible shaft assemblies of different specifications and different manufacturers. However, there is currently no rapid detection method, resulting in a lack of measurement parameters for the analysis of the quality of the shifting force, which seriously affects the analysis and rapid improvement of the vehicle's performance indicators. At present, the flexible shaft load efficiency test has the disadvantages of high professional equipment, expensive equipment, and long outsourcing test cycle, which cannot meet the actual production process and the production needs of rapid and effective detection and analysis of quality problems.

[0004] Therefore, it is necessary to invent a rapid testing device for the load efficiency of a vehicle shift flexible shaft to solve the problems of high testing cost, low testing efficiency and great difficulty of existing flexible shaft shift operation testing equipment. Utility Model Content

[0005] In view of the problems existing in the prior art, the utility model aims to provide a vehicle shift flexible shaft load efficiency rapid testing device.

[0006] The utility model solves the technical problem by adopting the following technical solution: a vehicle shift flexible shaft load efficiency rapid testing device, comprising a semicircular support frame and a support frame, two adjusting rods are connected between the semicircular support frame and the support frame, a semicircular limiting track is installed on the semicircular support frame, and a flexible shaft protective tube outside the flexible shaft is passed through the semicircular limiting track;

[0007] A force-applying mechanism is installed on one side of the upper part of the support frame. The force-applying mechanism is provided with a screw and a torque meter 1. The torque meter 1 moves through the screw. The torque meter 1 is connected to one end of the flexible shaft. A force-receiving mechanism is installed on the other side of the upper part of the support frame. The force-receiving mechanism is provided with a torque meter 2. The torque meter 2 is connected to the other end of the flexible shaft.

[0008] Preferably, an operating platform is provided on the upper portion of the support frame, and a force-applying mechanism and a force-receiving mechanism are installed on the operating platform.

[0009] Preferably, the force-applying mechanism is further provided with a base and a protective tube clamp 1, both of which are installed on the operating platform, and the protective tube clamp 1 clamps one end of the flexible shaft protective tube by tightening the bolt.

[0010] Preferably, two bearing seats are installed on the upper part of the base, and a screw rod is rotatably installed between the two bearing seats. One end of the screw rod is connected to a handwheel, and the handwheel controls the rotation of the screw rod. The screw rod is connected to a nut seat, and a torque meter is installed on the nut seat. The handwheel controls the rotation to control the torque meter to move axially along the screw rod. The output end of the torque meter is connected to a hook, and the hook is hooked on a hanging ring at one end of the flexible shaft.

[0011] Preferably, the force-bearing mechanism is also provided with an elongated base, on which a slide rail is provided, the slide rail is slidably connected to a slider, the slider is installed at the bottom of the slide seat, a torque meter 2 and a tube guard clamp 2 are installed on the slide seat, the tube guard clamp 2 clamps the other end of the flexible shaft tube guard by tightening the bolt, the output end of the torque meter 2 is connected to a hook 2, and the hook 2 is hooked on the hanging ring at the other end of the flexible shaft.

[0012] Preferably, a plurality of positioning holes are provided on both sides of the elongated base, and the slide seat is provided with through holes of the same size, and positioning rods pass through the through holes and the positioning holes, and the positioning rods position the slide seat.

[0013] Preferably, a stopper is installed on the outer side of the elongated base, and the stopper blocks the outer side of the slide seat.

[0014] Preferably, a plurality of brackets are installed on the support frame and the adjustment rod, and the brackets support the flexible shaft protective tube through the U-shaped groove.

[0015] The utility model has the following beneficial effects:

[0016] The vehicle shift flexible shaft load efficiency rapid testing device designed by the utility model can rapidly test the shift flexible shaft load efficiency (taking about 30 minutes), which greatly improves the efficiency compared with professional testing equipment.

[0017] The vehicle shift flexible shaft load efficiency rapid testing device designed by the utility model simulates the actual vehicle use condition of the flexible shaft to the maximum extent to test the shift flexible shaft load efficiency, and provides important technical data basis for accurate problem analysis and improvement.

[0018] The torque loading force applying mechanism of the vehicle shift flexible shaft load efficiency rapid testing device designed by the utility model adopts a spiral structure, and has the characteristics of convenient and controllable torque loading and stable torque.

[0019] The force bearing mechanism of the vehicle shift flexible shaft load efficiency rapid testing device designed by the utility model adopts a sliding adjustment device, has a wide testing range, and can meet the requirements of different flexible shaft assembly lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a vehicle shift flexible shaft load efficiency rapid testing device.

[0021] In the figure: 1-force applying mechanism, 1.1-screw rod, 1.2-nut seat, 1.3-bearing seat, 1.4-torque meter, 1.5-hook, 1.6-handwheel, 1.7-base, 1.8-tube holder;

[0022] 2-force bearing mechanism, 2.1-long base, 2.2-slide rail, 2.3-slide seat, 2.4-torque meter 2, 2.5-hook 2, 2.6-tube holder 2, 2.7-positioning rod, 2.8-positioning hole, 2.9 stopper;

[0023] 3-semicircular support frame, 3.1-semicircular limiting track;

[0024] 4-support frame; 5-operating platform; 6-adjusting rod; 7-bracket; 8-flexible shaft; 9-flexible shaft protective tube; 10-hanging ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely further describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1:

[0027] like Figure 1 As shown, 1. A vehicle shift flexible shaft load efficiency rapid testing device comprises a semicircular support frame 3 and a support frame 4, two adjusting rods 6 are connected between the semicircular support frame 3 and the support frame 4, a semicircular limiting track 3.1 is installed on the semicircular support frame 3, and a flexible shaft protective tube 9 on the outside of the flexible shaft 8 passes through the semicircular limiting track 3.1.

[0028] An operating platform 5 is provided on the upper portion of the supporting frame 4 , and a force applying mechanism 1 and a force receiving mechanism 2 are installed on the operating platform 5 .

[0029] The force-applying mechanism 1 is provided with a screw 1.1, a torque meter 1.4, a base 1.7 and a protective tube clamp 1.8. The torque meter 1.4 is moved by the screw 1.1. The torque meter 1.4 is connected to one end of a flexible shaft 8. The base 1.7 and the protective tube clamp 1.8 are both installed on an operating platform 5. The protective tube clamp 1.8 clamps one end of a flexible shaft protective tube 9 by tightening a bolt.

[0030] Two bearing seats 1.3 are installed on the upper part of the base 1.7, and a screw rod 1.1 is rotatably installed between the two bearing seats 1.3. One end of the screw rod 1.1 is connected to a handwheel 1.6, and the handwheel 1.6 controls the rotation of the screw rod 1.1. The screw rod 1.1 is threaded with a nut seat 1.2, and a torque meter 1.4 is installed on the nut seat 1.2. The handwheel 1.6 controls the rotation of the torque meter 1.4 to move axially along the screw rod 1.1. The output end of the torque meter 1.4 is connected to a hook 1.5, and the hook 1.5 is hooked on a hanging ring 10 at one end of the flexible shaft 8.

[0031] A force-bearing mechanism 2 is installed on the other side of the upper part of the support frame 4. The force-bearing mechanism 2 is provided with an elongated base 2.1 and a torque meter 2.4. The torque meter 2.4 is connected to the other end of the flexible shaft 8.

[0032] A slide rail 2.2 is provided on the elongated base 2.1, and the slide rail 2.2 is slidably connected to a slider, which is installed at the bottom of a slide seat 2.3. A torque meter 2.4 and a tube holder 2.6 are installed on the slide seat 2.3. The tube holder 2.6 clamps the other end of the flexible shaft tube 9 by tightening the bolts. The output end of the torque meter 2.4 is connected to a hook 2.5, and the hook 2.5 is hooked on a hanging ring 10 at the other end of the flexible shaft 8.

[0033] A plurality of positioning holes 2.8 are provided on both sides of the long base 2.1, and a through hole of the same size is provided on the slide 2.3. Positioning rods 2.7 pass through the through holes and the positioning holes 2.8, and the positioning rods 2.7 position the slide 2.3. A stopper 2.9 is installed on the outer side of the long base 2.1, and the stopper 2.9 blocks the outer side of the slide 2.3.

[0034] Three brackets 7 are installed on the support frame 4 and the adjustment rod 6, and the brackets 7 support the flexible shaft protection tube 9 through the U-shaped groove.

[0035] Embodiment 2: Specific implementation process using the structural form of embodiment 1.

[0036] This application is to explore an innovative design of a flexible shaft assembly quick detection device based on the needs of the heavy-duty automobile industry, while meeting the "QC / T29101" automobile industry standard.

[0037] According to the structure of the shift flexible shaft and the layout of the whole vehicle, the two ends of the flexible shaft protective tube 9 are fixed by a protective tube clamp. By loading the flexible shaft core wire with torque, the friction and resistance of the core wire in the flexible shaft protective tube 9 throughout the entire stroke are tested, and the loss of torque transmission is calculated. This is used to calculate and evaluate the reliability and performance assurance capability of the design, manufacturing process and technology of the flexible shaft, so as to evaluate the achievement of the flexible shaft performance indicators.

[0038] By rotating the hand wheel 1.6 on one side of the force-applying mechanism 1 (denoted as end A), the torque F is loaded through the spiral torque mechanism, and the flexible shaft 8 assembly transmits the loaded torque to the torque W on one side of the force-receiving mechanism 2 (denoted as end B). The load efficiency η value of the test flexible shaft 8 is obtained by the formula η=W / F×100%.

[0039] The diameter of the semicircular limiting track on one side of the semicircular support frame 3 (denoted as end C) is 400 mm, which is used to simulate the actual use conditions and the technical requirements of the performance indicators of the flexible shaft 8.

[0040] The main function of the protective tube clamp 1.8 and the protective tube clamp 2.6 is to fix the protective tube of the flexible shaft assembly and provide a relatively fixed route and trajectory for the flexible shaft core wire. The two ends of the flexible shaft 8 are fixed to the torque meter 1.4 of the force-applying mechanism 1 and the torque meter 2.4 of the force-receiving mechanism 2 by means of hanging rings 10. The flexible shaft 8 of different models and lengths is adapted and adjusted through the force-receiving mechanism 2 and by adjusting the length of the adjusting rod 6. The bracket 7 keeps the flexible shaft 8 in a smooth and 400mm diameter arc state.

[0041] First, rotate the handwheel 1.6 to apply preload force to the core wire of the flexible shaft to eliminate assembly and equipment stress, and set the torque meters at both ends to "zero".

[0042] Then rotate the hand wheel 1.6 to load the torque value set in the measurement plan. After the torque meter display values ​​at both ends are stable, record the loading torque F value at end A and the torque W at end B. The load efficiency η value of the test flexible shaft is obtained by the formula η=W / F×100%. The specific record table is:

[0043]

[0044] The present utility model is not limited to the above-mentioned implementation modes, and anyone should be aware of the structural changes made under the inspiration of the present utility model. Any technical solutions that are the same or similar to the present utility model fall within the protection scope of the present utility model.

[0045] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A vehicle shift flexible shaft load efficiency rapid testing device, characterized in that: It comprises a semicircular support frame (3) and a support frame (4), wherein two adjustment rods (6) are connected between the semicircular support frame (3) and the support frame (4), a semicircular limiting track (3.1) is installed on the semicircular support frame (3), and a flexible shaft protection tube (9) outside the flexible shaft (8) passes through the semicircular limiting track (3.1); A force-applying mechanism (1) is installed on one side of the upper part of the support frame (4), the force-applying mechanism (1) is provided with a screw rod (1.1) and a torque meter 1 (1.4), the torque meter 1 (1.4) moves through the screw rod (1.1), the torque meter 1 (1.4) is connected to one end of a flexible shaft (8), and a force-receiving mechanism (2) is installed on the other side of the upper part of the support frame (4), the force-receiving mechanism (2) is provided with a torque meter 2 (2.4), and the torque meter 2 (2.4) is connected to the other end of the flexible shaft (8).

2. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 1 is characterized in that: An operating platform (5) is provided on the upper part of the support frame (4), and a force applying mechanism (1) and a force receiving mechanism (2) are installed on the operating platform (5).

3. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 2 is characterized in that: The force applying mechanism (1) is also provided with a base (1.7) and a protective tube clamp (1.8), both of which are installed on the operating platform (5), and the protective tube clamp (1.8) clamps one end of the flexible shaft protective tube (9) by tightening the bolts.

4. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 3 is characterized in that: Two bearing seats (1.3) are installed on the upper part of the base (1.7); a screw rod (1.1) is rotatably installed between the two bearing seats (1.3); one end of the screw rod (1.1) is connected to a hand wheel (1.6); the hand wheel (1.6) controls the rotation of the screw rod (1.1); the screw rod (1.1) is threadedly connected to a nut seat (1.2); a torque meter (1.4) is installed on the nut seat (1.2); the hand wheel (1.6) controls the rotation of the torque meter (1.4) to move axially along the screw rod (1.1); the output end of the torque meter (1.4) is connected to a hook (1.5); the hook (1.5) is hooked on a hanging ring (10) at one end of the flexible shaft (8).

5. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 2, characterized in that: The force-bearing mechanism (2) is also provided with an elongated base (2.1), on which a slide rail (2.2) is provided, the slide rail (2.2) is slidably connected to a slider, the slider is mounted on the bottom of a slide seat (2.3), a torque meter (2.4) and a protective tube clamp (2.6) are mounted on the slide seat (2.3), the protective tube clamp (2.6) clamps the other end of the flexible shaft protective tube (9) by tightening a bolt, the output end of the torque meter (2.4) is connected to a hook (2.5), and the hook (2.5) is hooked on a hanging ring (10) at the other end of the flexible shaft (8).

6. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 5, characterized in that: A plurality of positioning holes (2.8) are provided on both sides of the elongated base (2.1), and the slide seat (2.3) is provided with through holes of the same size. Positioning rods (2.7) pass through the through holes and the positioning holes (2.8), and the positioning rods (2.7) position the slide seat (2.3).

7. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 5, characterized in that: A stopper (2.9) is installed on the outer side of the elongated base (2.1), and the stopper (2.9) blocks the outer side of the sliding seat (2.3) in a limited manner.

8. The vehicle shift flexible shaft load efficiency rapid testing device according to claim 1 is characterized in that: A plurality of brackets (7) are installed on the support frame (4) and the adjustment rod (6), and the brackets (7) support the flexible shaft protection tube (9) through the U-shaped groove.

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